CORS.md How do I implement "Allow users to request from all origins"? Major frameworks's implementation is following. dojango: use * https://github.com/adamchainz/django-cors-headers/blob/8484b2addc72665770872bebfc9cbaed8d041768/src/corsheaders/middleware.py#L151-L154 rails/rack: use * https://github.com/cyu/rack-cors/blob/b718a196cfe8daeeffbe5228d6878a28f7a0b6ac/lib/rack/cors/resource.rb#L63-L79
![CORS: "Allow All Origins" implemention in major framework](https://cdn-ak-scissors.b.st-hatena.com/image/square/1ef26f6cb4349557952890dbe3e567f7f98dc151/height=288;version=1;width=512/https%3A%2F%2Fgithub.githubassets.com%2Fassets%2Fgist-og-image-54fd7dc0713e.png)